JPH06226220A - Cleaning equipment - Google Patents

Abstract

(57) [Summary] [Purpose] In a cleaning device for parts for measuring devices such as a supply trough and a hopper, it is uniformly cleaned with a small number of nozzles. A cleaning nozzle 30 for spraying a foam cleaning liquid B and hot water H is provided at both ends of a nozzle support arm 56, and the nozzle support arm 56 is rotatably supported at the tip of a main arm 54. The main arm 54 is also rotatably provided, and the nozzle support arm 56 is swung while the main arm 54 is swung to move the cleaning nozzle 30 over a wide range, and the foamed cleaning liquid B and hot water H are sprayed alternately. .

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning device for cleaning a hopper or a supply trough of a weighing device such as a combination weighing device.

[0002]

2. Description of the Related Art A combination weighing device collects a plurality of objects to be weighed, such as confectionery, fruits, and vegetables, which have variations in individual weight, to obtain a target weight (for example, JP-A-63 / 63).
-30725). An example of this type of combination weighing device is shown in FIG.

In FIG. 8, a conveyor 1 drops an object to be weighed, which is manually placed, to the center of a dispersion feeder 2. A large number of supply troughs 3 are provided on the periphery of the dispersion feeder 2.
Is provided. By vibrating each supply trough 3,
The objects to be weighed on the dispersion feeder 2 are transferred to a large number of pool hoppers 4
Send to. A gate 5 is provided in each pool hopper 4, and a weighing hopper 6 is provided below the gate 5. Each weighing hopper 6 is provided with a hopper weight scale 7 and a gate 8. A large collecting and discharging chute 9 is provided below the gate 8. By combining the weights of the objects to be weighed obtained by the weighing hopper 6, the objects to be weighed are collectively set as a target weight. The gate 5
8 is opened and closed by the forward and backward moving hopper opening / closing tool 10 pressing the opening / closing link 11.

[0004]

In the combination weighing device of this type, when the type of food to be weighed changes, the inner surfaces of the feed trough 3 and the hoppers 4 and 6 with which the food comes into contact are washed accordingly. There is a need. Here, these supply troughs 3 and hoppers 4 and 6 are large in number, and are larger than tableware such as plates. Moreover, since the hoppers 4 and 6 are in the shape of a rectangular tube, it is difficult to spray the cleaning liquid onto the inner surfaces of the hoppers 4 and 6, and therefore cleaning is not easy as compared to dishes such as plates. Therefore, in order to clean the hoppers 4 and 6 evenly, an extremely large number of cleaning nozzles are required. However, providing a large number of nozzles causes a problem such as a complicated cleaning device.

Accordingly, a common object of the present invention is to uniformly clean parts of a metering device such as a supply trough and a hopper with a small number of nozzles.

[0006]

In order to achieve the above object, the invention of claim 1 provides a foaming device for foaming the cleaning liquid by mixing air with the cleaning liquid, and the above-mentioned foaming device provided in the upper part of the cleaning chamber. It is provided with a nozzle that communicates with the device and sprays the foamed cleaning liquid to the lower part for the measuring device, and a nozzle moving device that moves the nozzle in a horizontal plane.

According to the first aspect of the invention, since the nozzles are moved in the horizontal plane, the number of nozzles can be reduced.
Moreover, since the foamed cleaning liquid is sprayed, the trajectory of the foaming cleaning liquid that drops downward varies depending on the size of the foam mass. Therefore, even with a small number of nozzles, the cleaning liquid can be evenly sprayed on the parts for the measuring device.

Further, in a general washing machine for washing dishes,
Since it is easy to spray the cleaning liquid from the nozzle onto the surface of the tableware,
Dirt on the surface of the tableware can be scraped off by the pressure of warm water or cleaning liquid, whereas it is difficult to spray the pressured water to the inner surface of a deep tub like a hopper. Therefore, the stain cannot be removed by such a general method. On the other hand, in the invention of claim 1, since the foamed cleaning liquid is sprayed, if the foaming cleaning liquid is attached to the inner surface of the hopper and left for a certain period of time, the foaming cleaning liquid does not have to be directly sprayed on the surface to be cleaned. The strong surface-active force of can remove dirt.

According to the second aspect of the present invention, the nozzle for jetting at least one of the cleaning liquid and the warm water is supported at a position away from the center of rotation of the nozzle support arm, and the nozzle support arm is provided at a position away from the center of rotation of the main arm. A swivel drive device is provided which is swivel-supported and swivels the nozzle support arm and the main arm to change the position of the nozzle.

According to the second aspect of the invention, since the nozzle position can be changed by the nozzle support arm, the main arm and the turning drive device, the number of nozzles can be reduced. In particular, since the nozzle is attached to the nozzle support arm that is attached to the main arm so as to be rotatable, and both arms are rotated, the nozzle moves in a complicated trajectory, so the nozzle moves in a remarkably wide range. Therefore, the number of nozzles can be significantly reduced.

According to a third aspect of the present invention, there is provided a dual-purpose passage in which a cleaning liquid pressure-feeding pipe for pressure-feeding the cleaning liquid and a hot water pressure-feeding pipe for pressure-feeding hot water are provided, and a valve for selectively discharging the cleaning liquid or hot water to the dual-purpose passage. A device is provided so that the dual-purpose passage communicates with the nozzle.

According to the third aspect of the invention, since the cleaning liquid or the hot water is selectively discharged to the dual-purpose passage by switching the valve device, the cleaning liquid and the warm water can be sprayed from one nozzle. Is halved.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, the cleaning device includes a cleaning device body 21 and an opening / closing door 22 that form a cleaning chamber 20. In the cleaning chamber 20, as shown by the chain double-dashed line, the supply trough 3 (FIG. 8) and the hoppers 4, 6 which are parts for the weighing device.
The trolley for washing 23 on which is mounted is carried in. At the upper part of the cleaning chamber 20, the outlet of the fan F and the pair of cleaning nozzles 3 are provided.
0 is provided, and a sterilizing nozzle 24 is provided below the cleaning chamber 20. In addition, the cleaning carriage 23 has
The supply trough 3 (FIG. 8) is placed on the trolley base 23a, and a plurality of hoppers 4 and 6 are hooked above the supply trough 3 with the gates 5 and 8 (FIG. 8) opened.

Next, the system of the fluid supplied to the cleaning chamber 20 will be described. As shown in FIG. 2, the cleaning device is
It has first and second hot water tanks 31A and 31B. Cold water W is supplied to these hot water tanks 31A and 31B through a cold water introducing pipe 32 and a pair of first valves V1A and V1B. In addition, the hot water tank 31
A and 31B have a steam introduction pipe 34 and a pair of second pipes.
The steam S is introduced through the valves V2A and V2B. The steam S heats the cooling water in the hot water tanks 31A and 31B to produce the hot water H.

The hot water tanks 31A and 31B are respectively provided with a pair of hot water outlet pipes 35 and third valves V3A and V3.
It communicates with one hot water pump 36 via 3B.
The hot water pump 36 communicates with the foaming device 38 via the hot water pressure feed pipe 37, the dilution hot water pressure feed pipe 37A, and the fourth valve V4. Therefore, the hot water H in the hot water tanks 31A and 31B is pressure-fed to the foaming device 38.

On the other hand, the foaming device 38 is supplied with the cleaning stock solution C in the cleaning stock solution tank 40 by the pump pressure of the cleaning stock solution pump 39, and pressurized air is supplied through the air introducing pipe 41 and the fifth valve V5. A is supplied. The foaming device 38 is composed of, for example, a mixing stopper, and dilutes the stock solution for cleaning C with warm water H and mixes the diluted cleaning solution with pressurized air A to foam the cleaning solution. The foamed cleaning liquid (hereinafter referred to as “foaming cleaning liquid”) B is led out from the cleaning liquid pressure feed pipe 42.

The hot water pressure feed pipe 37 is divided into the dilution hot water pressure feed pipe 37A and the prewash rinse hot water pressure feed pipe 37B. The hot water pressure supply pipe 37B for pre-rinse rinse and the cleaning liquid pressure supply pipe 42 are joined and communicate with the combined passage 43. The shared passage 43 communicates with the pair of cleaning nozzles 30. Therefore, by selectively opening and closing the fourth and fifth valves V4 and V5 and the sixth valve V6 provided in the prewash rinse hot water pressure supply pipe 37B, the cleaning nozzle 30 causes the foaming cleaning liquid B or the warm water H to flow. Sprinkle on the parts for the weighing device below. The cleaning nozzle 30 sprays the foaming cleaning liquid B or the warm water H downward in a conical shape. Further, the fourth to sixth valves V4 to V6 form a valve device that selectively draws the bubbling cleaning liquid B or the warm water H to the dual-purpose passage 43.

The steam S is the steam introducing pipe 3
It is ejected from the sterilization nozzle 24 through the fourth and seventh valves V7 to raise the temperature inside the cleaning chamber 20 to a predetermined temperature (80 ° C. or higher). The first to seventh valves V1 to V7, the hot water pump 36 and the cleaning stock solution pump 39 are controlled to be opened and closed or operated by a controller (not shown) as described later.

Next, the detailed structure of the combined passage 43 of FIG. 1 and the nozzle moving device 50 for moving the cleaning nozzle 30 in the horizontal plane will be described. The nozzle moving device 50 has a drive hollow shaft 62. The hollow drive shaft 62 is rotatably supported by a first bearing case 53 fixed to the ceiling of the cleaner body 21. A drive motor M is installed on the cleaner main body 21, and the drive hollow shaft 62 is rotated by the drive motor M via the pulley 51 and the belt 52 as shown in FIG. .

At the lower end of the drive hollow shaft 62,
The central portion of the hollow main arm 54 is fixed. The main arm 54 rotatably supports the nozzle support arm 56 shown in FIG. 3 (b) at one end via a second bearing case 55. The cleaning nozzle 30 is supported on both ends of the nozzle support arm 56.

A fixed sprocket 57 is fixed to the first bearing case 53 shown in FIG. 3 (a). On the other hand, a driven sprocket 58 is fixed to the driven hollow shaft 63 connected to the upper portion of the nozzle support arm 56. The fixed sprocket 57 and the driven sprocket 58 are engaged with each other via the chain 59. Therefore, the driven sprocket 58 rotates while the fixed sprocket 5 rotates while the main arm 54 pivots.
Revolve around 7. That is, the drive hollow shaft 62 and the main arm 54 are rotated by the rotation of the drive motor M.
As shown by the chain double-dashed line in FIG. 4, the nozzle 59 is rotated clockwise and the driven sprocket 58 is rotated by the chain 59, so that the nozzle support arm 56 is rotated counterclockwise about the tip of the main arm 54. . In this way, the nozzle moving device 50 moves the cleaning nozzle 30 in the horizontal plane. The drive motor M, the pulley 51, the belt 52, the fixed sprocket 57,
The driven sprocket 58 and the chain 59 configure a turning drive device 60 that turns the main arm 54 and the nozzle support arm 56 to change the position of the cleaning nozzle 30.

The drive hollow shaft 62, the main arm 54, the driven hollow shaft 63 and the nozzle support arm 56 shown in FIG. 3B are hollow, and the shared passage 43 is formed therein. The dual purpose passage 43 in the main arm 54 is the first rotary joint 43 of FIG.
The hot water pressure feed pipe 37B for prewash rinse and the wash liquid pressure feed pipe 42 in FIG. 2 described above are communicated with each other through a and the dual-use pipe 43b. The dual-purpose passage 43 in the main arm 54 of FIG. 3A is driven by the driven hollow shaft 6 via the elbow 43c and the second rotary joint 43d.
3 communicates with the dual-purpose passage 43. On the other hand, one end of the dual purpose passage 43 in the main arm 54 is closed by the second bearing case 55, and the other end is the balancer 61 of FIG.
Is blocked by. Therefore, the foam cleaning liquid B or the hot water H introduced into the drive hollow shaft 62 of FIG.
Is sprayed from the cleaning nozzle 30 through the main arm 54, the elbow 43c, the second rotary joint 43d, the driven hollow shaft 63, and the shared passage 43 in the nozzle support arm 56.

A control device 70 is provided on the top of the cleaner main body 21 shown in FIG. The control device 70 has a timer (not shown), a lamp 71 that displays the process currently being performed, and a display unit 72 that displays the set time of the process, as shown in FIG. 5, and will be described below. To control the operation of the cleaning device.

First, an outline of the cleaning method will be described with reference to the flowchart of FIG. In this figure, when starting at step S1, the process proceeds to step S2, where the first
Hot water tank 31A or second hot water tank 31B (FIG. 2)
The preparation process such as raising the temperature of the cold water is started. After that, the process proceeds to step S3, and after the preparation is completed, step S4
Then, the operator turns on the operation switch. Continuing,
As in steps S5 to S10, one cleaning is completed after the prewashing process, the foam cleaning liquid spraying process, the leaving process, the rinsing process, the sterilization process and the drying process. At this time, the control device 70 switches operations such as opening / closing of the valves V1 to V7 of FIG. 2 and stopping / operating of the pumps 36 and 39 in each process of steps S5 to S10, and each time each process is entered. Then, each timer is activated, and after the timer times out, the timer is reset and the timer in the next step is activated to perform automatic operation. While the hot water H is supplied from one of the hot water tanks 31A and 31B to the hot water pump 36, the cold water W of the other hot water tank 31A and 31B is heated by the steam S.

Next, the detailed operation of the cleaning device will be described. First, one of the first valves V1A and V1B is opened in advance to supply the cold water W to one of the hot water tanks 31A and 31B. When the water is supplied to the predetermined water level, one of the second valves V2A and V2B is opened and the hot water tank 31
By blowing steam S into A and 31B, cold water W
Is raised to a predetermined temperature.

When the need for cleaning arises, the hoppers 4 and 6 and the supply trough 3 are removed from the weighing device of FIG. 8 and the gates 5 and 8 of the hoppers 4 and 6 are opened. Along with being hooked, the supply trough 3 is placed and the cleaning carriage 23 is carried into the cleaning chamber 20.

In the prewash step, the third valve V3A and the sixth valve V6 shown in FIG.
6 is operated to spray the hot water H from the washing nozzle 30 to the hoppers 4, 6 (FIG. 1) below through the hot water outlet pipe 35, the hot water pressure feed pipe 37 and the shared passage 43. During this pre-washing, the drive motor M of FIG. 3 is rotationally driven, so that the main arm 54 pivots through the pulley 51, the belt 52, and the drive hollow shaft 62 as shown by the chain double-dashed line in FIG. With the turning of the main arm 54, the driven device 60 and the chain 59 cause the driven sprocket 58 and the nozzle support arm 56 to rotate as indicated by a chain double-dashed line. In this way, while the main arm 54 rotates, the nozzle support arm 56 attached to the tip of the main arm 54 also rotates, so that the cleaning nozzle 30 moves to various positions in the horizontal plane and the hot water H is supplied. Sprinkle downwards. The operation of the cleaning nozzle 30 is the same in the following foaming cleaning liquid spraying process and rinsing process, and therefore the description thereof is omitted.

In the foam cleaning liquid spraying step, one of the third valves V3A and V3B shown in FIG. 2 is opened and the sixth valve V6 is closed. Also, the fourth valve V4 and the fifth valve V
5, the hot water pump 36 and the cleaning stock solution pump 39 are operated. Therefore, the hot water H, the cleaning stock solution C and the pressurized air A are introduced into the foaming device 38 to form the foaming cleaning liquid B. The foam cleaning liquid B is sprayed downward from the cleaning nozzle 30 via the dual-purpose passage 43, and the foam cleaning liquid B adheres to the inner surfaces of the hoppers 4, 6 (FIG. 1).

In the leaving step, all the valves V1 to V7 are closed and the pumps 36 and 39 are stopped for a predetermined time. This removes stains on the inner surfaces of the hoppers 4, 6 (FIG. 1) due to the surface-active effect of the foam cleaning liquid B and the like.

In the rinsing step, the hot water H is sprayed from the cleaning nozzle 30 in the same manner as the above-mentioned pre-cleaning step, and the foam cleaning solution B adhered to the surfaces of the hoppers 4, 6 (FIG. 1) and the like.
Wash off.

In the sterilization step, the valve V7 is opened, the steam S is introduced into the cleaning chamber 20, and the cleaning chamber 20 is maintained at a predetermined high temperature for a certain period of time for sterilization. In the drying step, the fan F of FIG. 1 is operated to blow air into the cleaning chamber 20 to dry the hoppers 4, 6 and the like. After that, the carriage 23 is taken out of the cleaning chamber 20.

In the above structure, since the cleaning device sprays the foam cleaning liquid B, as described above, the foam cleaning liquid B is used.
By allowing the cleaning liquid to adhere to the inner surfaces of the hoppers 4, 6 and the like for a certain period of time, even if the cleaning liquid is not directly sprayed onto the inner surfaces of the hoppers 4, 6 and the like, the strong surface-active force of the foaming cleaning liquid B removes dirt. Can be removed. Therefore, even the deep hoppers 4 and 6 can be automatically cleaned.

Further, since this cleaning device sprays the foam cleaning liquid B, the size of the foam lumps varies, but depending on the size of the foam lumps, the locus of the foam cleaning liquid B falling downward is generated. There are variations. Moreover, the nozzle support arm 5 attached to the main arm 54 of FIG.
Nozzle 30 for cleaning is attached to 6, and both arms 54 and 56
Is swung, the cleaning nozzle 30 moves over almost the entire area of the cleaning chamber 20. Therefore, since the foam cleaning liquid B can be evenly distributed to the hoppers 4, 6 (FIG. 1) and the like, the hoppers 4, 6 can be cleaned with a small number of cleaning nozzles 30.
(FIG. 1) and the like can be performed.

Further, the fourth to sixth valves V4 to V of FIG.
By switching between 6 and 6, the foaming cleaning liquid B or the hot water H is selectively supplied to the cleaning nozzle 30 through the shared passage 43, and the number of cleaning nozzles 30 is halved.

Further, in the above embodiment, since two hot water tanks 31A and 31B are provided and two hot water supply systems for supplying hot water H to the hot water pump 36 are provided, hot water is alternately supplied from the two hot water tanks 31A and 31B. The hot water H may be supplied to the pump 36. Therefore, a plurality of combination weighing devices can be washed one after another.

Further, in this embodiment, since the control device 70 (FIG. 1) resets the timer at the end of each process, it is not necessary to set the operating time of each process each time.

In the present invention, the cleaning nozzle 3
The number of 0 may be one or three or more. Further, the cleaning nozzle 30 and the nozzle support arm 56 in FIG. 4 do not need to be supported by the tips of the nozzle support arm 56 and the main arm 54, respectively, and are located at positions distant from the center of rotation of the nozzle support arm 56 and the main arm 54. To support.

By the way, in the above embodiment, the cleaning nozzle 30 sprayed downward and sprayed on the foaming cleaning liquid B or the warm water H, but the present invention is not limited to such a method. For example, as shown in the modified example of FIG. 7A, even if the rotating pipe 43e is rotatably supported by the bearing case 55A fixed to the cleaner main body 21 and the cleaning nozzle 30 is opened in the horizontal direction. Good.

In the embodiment shown in FIG. 4, both arms 54,
The cleaning nozzle 30 is moved by rotating 56, but the invention of claim 1 is not limited to such a method. For example, as shown in the modified example of FIG. 7 (b), by bending the tip end portion 43f of the rotary tube 43e in the horizontal direction, the cleaning nozzle 30 is moved by the reaction force of the jetting output of the foaming cleaning liquid B or the hot water H. It may be rotated around the vertical axis V.

[0040]

As described above, according to the inventions of the respective claims, it is possible to clean the rectangular hopper with a small number of nozzles. Further, according to the first aspect of the invention, since the foaming cleaning liquid having a strong surface activity is sprayed, dirt can be removed even for parts such as hoppers where it is difficult to directly spray the cleaning liquid onto the surface to be cleaned. .

[Brief description of drawings]

FIG. 1 is a schematic side view in which a part of a cleaning device according to an embodiment of the present invention is cut away.

FIG. 2 is a system diagram of fluid ejected from a nozzle.

FIG. 3 is a front view and a side view of a nozzle moving device and a turning drive device.

FIG. 4 is a plan view of the same.

FIG. 5 is a front view showing a part of a display panel.

FIG. 6 is a flowchart showing a schematic process of cleaning.

7A is a side view showing a modified example of the nozzle moving device, and FIG. 7B is a sectional view taken along line 7b-7b of FIG. 7A.

FIG. 8 is a schematic configuration diagram showing a combination weighing device.

[Explanation of symbols]

3, 4, 6 ... Parts for weighing device, 20 ... Washing room, 30 ...
(For cleaning) Nozzle, 37 ... Warm water pressure feed pipe, 38 ... Foaming device, 42 ... Wash liquid pressure feed pipe, 43 ... Combined passage, 50 ... Moving device, 54 ... Main arm, 56 ... Nozzle support arm,
60 ... Revolving drive device, V4 to V6 ... Valve device, A ... Air,
B ... (foaming) cleaning liquid, H ... warm water.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Koji Io 693, Kokawa, Koga-machi, Naga-gun, Wakayama 1 Ryowa Giken Kogyo Co., Ltd. (72) Nobuo Koyama 1-5 Tenma, Kita-ku, Osaka-shi, Osaka No. 20 Incorporated company Ishida Hoki Co., Ltd. Osaka Branch (72) Inventor Masaaki Iwamoto 1-5-20 Tenma, Kita-ku, Osaka City, Osaka Prefecture Incorporated Ishida Hoki Co., Ltd. Osaka Branch

Claims (3)

[Claims] 1. A cleaning device for measuring device parts, comprising: a foaming device for foaming the cleaning liquid by mixing air with the cleaning liquid; and a foaming cleaning liquid provided at the upper part of the cleaning chamber and communicating with the foaming device. A cleaning device equipped with a nozzle for spraying the lower part of the metering device and a nozzle moving device for moving the nozzle in a horizontal plane. 2. A washing device for parts for a measuring device, wherein a nozzle for jetting at least one of washing liquid and warm water is supported at a position apart from a turning center of a nozzle supporting arm, and the nozzle supporting arm is turned for a main arm. A cleaning device provided with a swivel drive device that swivels and supports it at a position away from the center, and swivels the nozzle support arm and the main arm to change the position of the nozzle. 3. A washing device for parts for a metering device, comprising a combined passage for joining a washing liquid pressure feed pipe for feeding a washing liquid and a hot water pressure feed pipe for feeding hot water, wherein the washing liquid or hot water is selectively used. A cleaning device in which a valve device leading to a dual-purpose passage is provided and the dual-purpose passage communicates with a nozzle.